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SHBATHING AND LATH MACHINE. l

' No. 357,521.v

.Patented Peb. 8, 1887.

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- E...M.BYRKIT.

SHBATHING AND LATHMACHINB.

No. 357,521... Patent-eww. 8, 1887.

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Unire STATES Artnr OFFICE. 'i

EDWIN M. BYRKIT, OF MICHIGAN CITY, ASSIGNOR OF THREEFOURTHS TO ADDISON A. ADAIR, JOHN H. MURRY, ANDk HENRY COBURN, ALL OF INDIANAPOLIS, INDIANA.

SHEATHING AND LATI-i MACHINE.

SPECIFICATION forming part of Letters Patent No. 357,521, dated February 8, 1887.

Application filed July 111, 1856. Serial-No. 207,960. (No model.)

To all whom, it may concern: the threaded openings near the ends of the Be it known that I, EDWIN M. BYRKI'I, a crosspiecef, will cause this cross-piece to rise resident of Michigan City, Indiana, have made or fall, according as the crank is turned, carrycerta'in new and useful Improvements in ing withit the adj ustable mandrelsm, which are Sheathing and Lath Machines, a description of detachably fastened to each side of this cross- 5 5 which is set forth in the following specification, piece by means ot' the bolts 5, passing through `reference being made to the accompanying slots 6 into a boss or projection bon the sides drawings, in the several figures of which like of the sleeves si, which surround the mandrels. letters represent like parts. These mandrels are constructed in the manner 1o My invention relates to the construction of shown and described in Letters Petent No. 6o machines for forming grooves and kerfs in 335,335, issued to me on the 2d of February, boards intended to be used as sheathing and 1886, aud no claim is made separately thereon laths, and is an improvement upon the device in this application. It is sufficient to say, by shown in Letters Patent No. 335,335, issued-to way of description generally, that the manme February 2, 1386, and will be understood drels proper, m and on', are surrounded by 65 from the following description. boXings b and b2, within which the mandrels In the drawings, Figure l represents a front revolve, and these boxings by sleeves sl and view of the entire machine, the frontvportion si', which are constructed in halves, as shown of the frame-work being cut away so as to in Figs. 2 and 3, and united by bolts, and by 2o show the relation of the operative parts. Fig. loosening these bolts the mandrels are ad 7o, 2 is a longitudinal section of the adjustable justable along the line of their length in the mandrelwhichcarriesthe grooving-saws. Fig. boxings, and, when the proper, length is de- 3 is a side view ofthe same. Fig. 4 is a top termined, by tightening the bolts which unite view of the mandrel with its adjustable boxthe halves of the outer sleeve, the boxing is ings that carry the lower series of saws which firmly clamped, but not so tightly as to ple- 75 cut the kerfs in the under side of thesheathvent the mandrel. from revolving therein. ing, a portion of the frame being shown in The mandrels m and their sleeve and boXings crosssection. Fig. 5 is a side view`of a porare attached to the cross-piecef of the frame,

, tion of the same mechanism, the saws and vand the lower mandrel is suspended in boXings 3o driving-pulley being left off. Fig. 6 is an end beneath the table t, as hereinafter described. 8o viewpof the same. The mandrels carrying the upper saws are In detail, y" is the frame-work, preferably placed one ahead of the other and on opposite made of iron, standing on four feet, the front sides of the cross-piece, so as to cut opposite portion of which is cut away so as to show sides of the dovetailed groove in the sheath- 3 5 the Operating mechanism of the machine, as inglath L, as shown in Fig. 1. S 5 set forth in Fig. 1. This front portion rests Z is a lug which projects from the cross-piece upon two legs similar to those shown in Fig. f, and provides a bearing for the screw-rod l, and provides a broader support for the 0*,which Works iu the threaded opening formed frame, and may be used, if desired, 'for carryin a projection from the boss b, and by tight- 40 ing the driving-pulleys, from which belts pass eniug or loosening this screw it is obvious that 90 to the pulleys proper of the machine. the mandrel is allowed a horizontal -adjustf The frame-workf at its upper end provides ment within the limits of the length of the bearings for the shaft Sh., which carries beveled long slot 6, it being understood that a similar gears g, intermeshing with similar gears, g', screwrod is placed on each side of the crossmount-ed on the upper end of the screws sc, piecef for each mandrel. This part of the 95 which pass through an upper supporting-bar, mechanism is fully shown and described in b5, and pass downward into the cross-piecef, Letters PatentNo. 335,335, before mentioned. whose ends are grooved to slide upon the The sheathinglath Lis placed on a table, t, rounded faces of the framework, and by turnwhich extends across midway between the sup- Y 5o ing the crank c the screws se, which work in ports of the frame, and is suitably braced at Ico each end. rEhe sheathing-lath L is placed about the center of this table, as shown in Fig.

1, and directly beneath it are openings in the table to allow the edges of the undercuttingsaws s to pass up through and project a sufficient distance above the top of the table to cut a series of kerfs of the proper depth inthe under side of the sheathing-board, at the same time that the dovetailed grooves are being cut in its upper surface by means of the saws mounted on the inclined mandrels. These undercutting-saws s are mounted on a secondary mandrel, m", which has a bearing near its outer end in a movable block clamped to the side of the framef, and is supported near the other end in bearings in a hanger, lz., which is bolted at 1 and 2 to the side of the table i. This hanger has upon its sides long slots which receive bolts 3 and 4, passing through the slots into the sleeve SZ. This mandrel ym' is provided near each end with sleeves and bushing like those shown in the other mandrels, but somewhat shorter, there being a space left iu the center between the bushings. The outer end of the mandrel carries a driving-pulley, p2, and has bearings in a movable block, 8, as shown in Fig. G, which slides in guides 9 on each side, and is provided with slots 12 and 13,to receive clamping-screws 11,which secure it to the frame-work j", through which the mandrel also passes.

se' is a lifting-screw which passes through the table t down into a shelf, 14, which has a threaded opening to receive the screw. This shelf is secured to the sleeve sl ofthe inandrel,l and also to the movable block 8, so that by loosening the clamp-screws 3 and 4 in the hanger h and 11 on the side of the frame, and

turning the screw sc' the mandrel m', with its attachments, including the undercuttingsaws, may be raised or lowered within proper limits, and the depth of cut of the saws may be increased or diminished at the pleasure of the operator.

o are oil-cups which connect by suitable pipes, such as p', with oilboxes ob in the sleeves, through which openings extend to the mandrels,for the purpose of lubricating them.

br is a brace for connecting the sides of the frame near the bottom, the frame being securely bolted to the floor or other foundation, through each foot, as shown in Fig. 1, and is thus made perfectly steady and secure.

I thus provide a combined machine carrying in the upper portion of its frame a series of saws of different diameters mounted on oppositely-inclined mandrels, which are detachably secured to a cross-piece of the frame, which can be raised or lowered in a vertical plane, while the Inandrels themselves are adjustable in their sleeves along the line of their length and with their sleeves and boxings horizontally upon the cross piece to which they are attached, and in the lower portion of the frame,below the table upon which the material rests, I provide an adjustable mandrel carrying a series of undercuttingsaws which cut the kerfs in the block or board while the upper saws are cutting the dovetailed grooves in the face, and this undercutting mechanism is also adjustable horizontally and vertically, so that the depth of the cut may be regulated by the means hereinbefore described.

Having thus described my invention,what I claim, and desire to secure by Letters Patent, is the following:

l. In a sheathing and lath machine, a series of saws mounted on a shaft beneath a table supported in the frame-work,for cutting kerfs on the under side of a board, and a series of saws mounted on oppositelyinclined shafts above such table, for cutting a dovetailed groove in the upper side of the same board these upper and under cutting saws located substantially in the same vertical plane and operating concurrently,the board being firmly held between such saws, with mechanism for driving the same, all combined substantially as described.

2. In a sheathing and lath machine, a framework having a table upon which the material rests, a series of saws of different diameters removably mounted on mandrels oppositely inclined to each other and adj ustably con' nected to a portion of the frame, so as to be raised or lowered by means of suitable screwand-gear mechanism, a shaft beneath such table having a bearing at one end in a support movable vertically in the side of the* frame, with means for securing the same at any desired point and supported near the center by means of a hanger, also allowing a vertical adj ustment of such shaft,and a series of saws mounted upon such shaft at right angles to its length and passing up through openings in the table to cut the kerf in the under side of the sheathing material, with suitable screw mechanism for lowering such undercutting-saws, all combined substantially as described.

3. -A sawing-machine for operating on both sides of a board at once, comprising, in combination, a series of upper saws mounted on oppositely-inclined shafts having vertical and horizontal adjustments, and a series of undercutting-saws mounted on an auxiliary shaft having similar adjustments, the two sets of saws located in substantially the same vertical plane and on opposite sides of the table upon which the board to be dressed rests, whereby the board is held irmly between the two sets of saws, the whole supported upon a suitable frame-work, with mechanism for driving the same, substantially as shown and de scribed.

In witness whereof I have hereunto set my hand this 6th day of July, 1886.

EDWIN M. BYRKIT.l

Witnesses:

I. A. THORNTON, PETER Gonne.

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